Johannes Jacobus Oosthuizen - President, U.S. Market at Merck & Co., Inc.

Insider Transactions and Holdings

Entity Type
Individual
Role
President, U.S. Market
Issuer Symbol
MRK on NYSE
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Johannes Jacobus Oosthuizen - trading volume in the past year for Merck & Co., Inc.

Holdings reported by Johannes Jacobus Oosthuizen for Merck & Co., Inc.

Security Num Shares Value Price $ Transaction Date Ownership Underlying Class Underlying Amount
Common Stock 21,197 $2,583,243 $121.87 06 Feb 2026 Direct
Restricted Stock Unit 4,132 $0 $88.25 29 Apr 2025 Direct Common Stock
Stock Option (Right to Buy) 18,807 29 Apr 2025 Direct Common Stock

Transactions reported by Johannes Jacobus Oosthuizen for Merck & Co., Inc.

Sym Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.